GCPBA RiverNews 07.22.13 – August Canyon Flows – 9,000 to 17,000 CFS

This notification confirms that the release volume from Glen Canyon Dam for August 2013 will be 800,000 acre-feet. Hourly and daily average releases from Glen Canyon Dam for August 2013 will be scheduled through Western Area Power Administration to be consistent with the Glen Canyon Dam Operating Criteria (Federal Register, Volume 62, No. 41, March 3, 1997) and to also achieve, as nearly as is practicable, this monthly volume.

Hourly releases during August 2013 are anticipated to range between approximately 9,000 cfs in the nighttime and approximately 17,000 cfs during the day.

This notification supersedes all previously issued notifications and is current until a new notification is issued. All times identified in this notification are local time (Mountain Prevailing Time) and not hour ending.

We anticipate the release volume for September 2013 will be about 600,000 acre-feet with fluctuations between approximately 7,000 cfs and approximately 13,000 cfs. The anticipated release volume for October 2013 is currently approximately 480,000 acre-feet with daily fluctuations between approximately 5,000 cfs and approximately 10,000 cfs. This will be confirmed in a subsequent notification toward the end of August.

If there are any concerns or questions regarding these operations, I can be reached at 801-524-3635. Your cooperation is greatly appreciated.



Katrina A Grantz, PhD
Hydraulic Engineer, Glen Canyon Dam
Bureau of Reclamation

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